Post #3164835
2025-12-31 00:41 UTC
note the amount of jumps whose sole purpose appears to be "make the prefetch unit do a pull-up"
Replies (3)
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@jpm@aus.social 2025-12-31 01:54
@whitequark@mastodon.social … does the branch predictor even do anything on an unconditional jump? It’s basically an `ADDI zero, zero, 0` wearing a funny hat
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@mokomull@macaw.social 2025-12-31 04:34
@whitequark@mastodon.social this *almost* feels like NaCl ("native client", not the cryptography library) that required explicitly jumping forward so that no instruction would straddle a 32-byte boundary. Except that isn't even a problem by definition in MIPS instruction encoding...
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@m@miruku.cafe 2025-12-31 06:49
@whitequark@mastodon.social whats a pull up?